Home / Standards / GB/T 12137-2025 GB/T 12137-2025 Active Methods for leakage test of gas cylinders 气瓶气密性试验方法 Standard Type GBT ICS 23.020.30 CCS J 74 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 国家标准委 Drafting Unit N/A